Whilst investigating why my routing table size suddenly jumped by 5k
routes, I discovered that Advantis (AS 2685 at MAE-E, origin AS 3082)
was leaking all sorts of more-specifics for various networks into the
bgp mesh. Yeah, I know I should be running bogon filters...

Anyway, I called up their NOC to complain, and when I explained the
situation I was asked which Internet I was calling about. Then when I
asked to be transferred to a supervisor, the "support" person became
argumentative and didn't want to transfer me. I had to be rudely
direct and demand to be transferred before I was put on hold for five
minutes and then informed that the supervisor was out to dinner.